Warnings when using % operator

[Martin]

Re: Warnings when using % operator

Tim wrote:[color=blue]
> ... The signed/unsigned comparison in the
> 'for' control clause gets flagged with a
> warning. Am I on track?[/color]

Sort of. In fact, Ben explained the problem in his response to me:

"When `a' and `b' are unsigned, `a % b'
is always nonnegative. Thus, ((i) % (j)) < 0
is always false in this case, hence the
first warning. That subexpression is the
first part of a ?: expression, hence the
second warning." -- Ben, 15 Sep 2004

So the problem arises when the IMOD macro is used. Regarding your
suggestion, I note that Plauger says:

"You should make a point of using type
size_t *anywhere* your program
performs array subscripting or address
arithmetic."
-- P.J. Plauger, The Standard C Library

Thanks for your post.

Martin

http://martinobrien.co.uk/

[Martin]

Re: Warnings when using % operator

"Eric Sosman" wrote:[color=blue]
> Yes, but this latest question baffles me. What
> are you getting at?[/color]

Eric, I was puzzled by the sudden break in sentence, you wrote "why not" and
then quoted my IMOD definition.

Martin

http://martinobrien.co.uk/

[Eric Sosman]

Re: Warnings when using % operator

Martin wrote:[color=blue]
> "Eric Sosman" wrote:
>[color=green]
>> Yes, but this latest question baffles me. What
>>are you getting at?[/color]
>
>
> Eric, I was puzzled by the sudden break in sentence, you wrote "why not" and
> then quoted my IMOD definition.[/color]

Ah, now I see. If you'll re-read my post you'll find
that one of the six lines is not a quote, but differs from
your original version. The changed line is my contribution
(FWIW); the others were just for context. Sorry if they
misled you.

--
Eric.Sosman@sun .com